这种区分类似于前面的稳定轨道图形。
This classification is the analogy of our previous picture of stable orbits.
讨论了不稳定不动点邻域的不稳定轨道的稳定问题。
The stabilization of an unstable periodic orbit in a neighborhood of an unstable fixed point is studied.
自上世纪六十年代起，研究者们就开始研究在这种带电旋转的黑洞内的光子稳定轨道。
Since the 1960s, researchers have determined stable orbits for photons inside these charged, rotating black holes.
问题是，只有曾穿过黑洞视界的临界才会存在稳定轨道，那里时间与空间会流入其他地方。
The problem is that these stable orbits would only exist once you have crossed the threshold of the event horizon, where time and space flow into one another.
最终(1 - 10千万年后)我们在稳定轨道上就有了十个左右的行星——这就是太阳系。
Eventually, after ten to a hundred million years, you end up with ten or so planets, in stable orbits, and that's a solar system.
我认为这可能是由于奥尔特云受到一个正在把彗星抛出稳定轨道的大天体的扰动，其中一小部分彗星可能会到达地球。
I believe it is likely that this is because the Oort Cloud is being disturbed by a massive body that is throwing comets out of stable orbits, a small fraction of which could reach the Earth.
在我们这个宇宙里出现了漫长生命周期的恒星，具有稳定轨道的行星，能够实现复杂化学变化的分子，仿佛它的物理法则曾被精确校准过。
In our universe the laws of physics seem precisely calibrated to allow the existence of long-lived stars, planets with stable orbits, and molecules that allow complex chemistry.
一个月亮很可能帮助稳定火星的轨道，但是它也有两个小的卫星，很可能是被捕获的小行星，他们根本就没有足够的引力能束缚。
A big moon likely could have helped stabilize Mars' orbit, but the planet has just two small moons, most likely captured asteroids, that don't have much gravitational muscle.
然而，假如一颗已有行星伴随的恒星再要捕获另一颗行星，那么已有行星中的一颗便会改变它的轨道，而这样的结果将会导致系统不稳定。
However, if a star with planets captures another one, then one of its existing planets must change its orbit, and this could make the system unstable.
也许有这么一个遥远的天体具有一个更加稳定的更加圆润的轨道而至今未被我们发现。
There might be a distant object in a more stable, more circular orbit that has gone unnoticed so far.
他认为虽然常规的轨道不可能存在，但在某些地方粒子和行星会有稳定而不寻常的螺旋轨道。
He says while conventional orbits wouldn't be possible, there are some places where particles and planets could have stable though unusual spiral orbits.
在Dokuchaev的这篇新论文里，他既考虑了光子在内边界的稳定圆轨道，也考虑了球形非赤道面轨道。
In his new paper, Dokuchaev has looked at stable circular orbits as well as spherical, non-equatorial orbits for photons at the inner boundary.
任何的不稳定和轨道衰变都能通过推进器和机载发动机修正。
Any instability or orbital decay can be corrected with thrusters and an onboard engine.
电脑模拟显示，如果在一个恒星系统中有超过一个巨行星存在的话，它们会上演一场“重力掰手腕”比赛，这会使得它们的轨道变得不稳定。
Computer simulations show that if there is more than one giant planet in a solar system's family, they will perform a kind of gravitational arm-wrestling match, making their orbits unstable.
但是穆勒认为正是这种不稳定性在百万年的时间中改变了它的轨道，在下一个十亿年“复仇者”会完全脱离太阳系。
But Muller says this instability has resulted in an orbit that has changed greatly over billions of years, and in the next billion years Nemesis will be thrown free of the solar system.
他透露2008年印度的月球卫星曾下降到60英里处，但又被迫回到了更为稳定的125英里高的轨道上。
India's own lunar orbiter descended to about 60 miles in 2008, he said, but was forced to return to a more stable, 125-mile-high orbit.
Ruina说，虽然陀螺效应和轨道效应都有助于稳定性的提高，但是还有其他因素诸如质量的分布，车子当时的惯性。
While gyro and trail effects can contribute to stability, other factors such as the distribution of mass and the bike's moment of inertia can play a role as well.
我们做出的电脑模拟效果图显示，这一星系的运行轨道一般来说是稳定的，但是一旦其周围的物体发生变动，它就会瞬间变得不稳定。
Our computer simulations have shown that this type of orbit can be stable, but if you change things around just a little bit, it can become unstable very quickly.
Espresso的素质则有点不稳定，虽然我们听说咖啡店上轨道后情况有所改善。
The quality espresso is a bit variable, though we've heard that things are improving as the cafe settles in.
如果那是真的话，那就意味着在稳定的太阳系中的行星很有可能脱出轨道，发生碰撞。
So if that's true, then it means that it's possible for planets in a stable solar system to somehow get off track and run into each other.
这使得轨道系统不稳定，外一层轨道的电子会迅速跃迁到内层空轨道上，填补空穴。
This makes the system of orbitals unstable and an electron from an orbital further out rapidly fills the hole.
跨座式单轨PC(预应力混凝土)轨道梁桥结构具有承重、导向及稳定的作用。
Straddle type single track beam of Press Steel Concrete (PC) possess the action of bearing, orienting and stabilizing.
如果将围绕黑洞的轨道调至尽可能的小（即轻微拉长最内层的稳定圆形轨道），对岁差率有何改变？
What happens to the precession rate if the orbit around a black hole is made nearly as small as possible, i. e. a slight elongation of the innermost stable circular orbit?
其次，应用泰勒展开定理，设计了一种近似的延迟反馈控制方法，将受控的系统稳定到希望的周期轨道或平衡点上。
Secondly, we design an approximated delay feedback control method by applying Taylor theorem; it can make the controlled system stabilize the expected periodic orbits or equilibrium points.
数值计算耦合单峰格子(CLL)的两种典型模式，得到了一系列稳定的时空周期轨道。
Two typical pattern in coupled logistic lattices (CLL) are calculated numerically and a series of stabilized spatiotemporal periodic orbits are obtained.
并将该混沌控制方法推广应用到二维光滑混沌映射系统中，成功实现了该混沌系统中的不稳定周期2轨道的镇定。
A two-dimensional smooth mapping system can be controlled from chaos to a stable period-2 orbit by the nonlinear feedback chaos control method.
并将该混沌控制方法推广应用到二维光滑混沌映射系统中，成功实现了该混沌系统中的不稳定周期2轨道的镇定。
A two-dimensional smooth mapping system can be controlled from chaos to a stable period-2 orbit by the nonlinear feedback chaos control method.
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